661 lines
17 KiB
Vue
661 lines
17 KiB
Vue
<template>
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<div
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class="scroller"
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ref="scroller"
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v-bind:class="{
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'scrolling-recycler-now': scrollingRecyclerNowTimer,
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'scrolling-recycler': scrollingRecyclerTimer,
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'scrolling-now': scrollingNowTimer,
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scrolling: scrollingTimer,
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}"
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@mousemove.passive="mousemove"
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@mouseleave.passive="mouseleave"
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@mousedown.passive="mousedown"
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@mouseup.passive="interactend"
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@touchmove.prevent="touchmove"
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@touchstart.passive="interactstart"
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@touchend.passive="interactend"
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@touchcancel.passive="interactend"
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>
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<span
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class="cursor st"
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ref="cursorSt"
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:style="{ transform: `translateY(${cursorY}px)` }"
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>
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</span>
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<span
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class="cursor hv"
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:style="{ transform: `translateY(${hoverCursorY}px)` }"
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@touchmove.prevent="touchmove"
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@touchstart.passive="interactstart"
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@touchend.passive="interactend"
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@touchcancel.passive="interactend"
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>
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<div class="text">{{ hoverCursorText }}</div>
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<div class="icon"><ScrollIcon :size="22" /></div>
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</span>
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<div
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v-for="tick of visibleTicks"
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:key="tick.key"
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class="tick"
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:class="{ dash: !tick.text }"
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:style="{ transform: `translateY(calc(${tick.top}px - 50%))` }"
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>
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<span v-if="tick.text">{{ tick.text }}</span>
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</div>
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</div>
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</template>
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<script lang="ts">
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import { defineComponent, PropType } from "vue";
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import { IRow, IRowType, ITick } from "../types";
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import ScrollIcon from "vue-material-design-icons/UnfoldMoreHorizontal.vue";
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import * as utils from "../services/Utils";
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// Pixels to snap at
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const SNAP_OFFSET = -35;
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export default defineComponent({
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name: "ScrollerManager",
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components: {
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ScrollIcon,
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},
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props: {
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/** Rows from Timeline */
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rows: Array as PropType<IRow[]>,
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/** Total height */
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height: Number,
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/** Actual recycler component */
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recycler: Object,
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/** Recycler before slot component */
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recyclerBefore: HTMLDivElement,
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},
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data: () => ({
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/** Last known height at adjustment */
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lastAdjustHeight: 0,
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/** Height of the entire photo view */
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recyclerHeight: 100,
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/** Rect of scroller */
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scrollerRect: null as DOMRect,
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/** Computed ticks */
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ticks: [] as ITick[],
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/** Computed cursor top */
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cursorY: 0,
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/** Hover cursor top */
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hoverCursorY: -5,
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/** Hover cursor text */
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hoverCursorText: "",
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/** Scrolling using the scroller */
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scrollingTimer: 0,
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/** Scrolling now using the scroller */
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scrollingNowTimer: 0,
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/** Scrolling recycler */
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scrollingRecyclerTimer: 0,
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/** Scrolling recycler now */
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scrollingRecyclerNowTimer: 0,
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/** Recycler scrolling throttle */
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scrollingRecyclerUpdateTimer: 0,
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/** View size reflow timer */
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reflowRequest: false,
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/** Tick adjust timer */
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adjustRequest: false,
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/** Scroller is being moved with interaction */
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interacting: false,
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/** Track the last requested y position when interacting */
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lastRequestedRecyclerY: 0,
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}),
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computed: {
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/** Get the visible ticks */
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visibleTicks(): ITick[] {
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let key = 9999999900;
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return this.ticks
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.filter((tick) => tick.s)
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.map((tick) => {
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if (tick.text) {
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tick.key = key = tick.dayId * 100;
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} else {
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tick.key = ++key; // days are sorted descending
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}
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return tick;
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});
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},
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},
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methods: {
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/** Reset state */
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reset() {
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this.ticks = [];
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this.cursorY = 0;
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this.hoverCursorY = -5;
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this.hoverCursorText = "";
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this.reflowRequest = false;
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// Clear all timers
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clearTimeout(this.scrollingTimer);
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clearTimeout(this.scrollingNowTimer);
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clearTimeout(this.scrollingRecyclerTimer);
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clearTimeout(this.scrollingRecyclerNowTimer);
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clearTimeout(this.scrollingRecyclerUpdateTimer);
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this.scrollingTimer = 0;
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this.scrollingNowTimer = 0;
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this.scrollingRecyclerTimer = 0;
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this.scrollingRecyclerNowTimer = 0;
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this.scrollingRecyclerUpdateTimer = 0;
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},
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/** Recycler scroll event, must be called by timeline */
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recyclerScrolled(event: Event | null) {
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// This isn't a renewing timer, it's a scheduled task
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if (this.scrollingRecyclerUpdateTimer) return;
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this.scrollingRecyclerUpdateTimer = window.setTimeout(() => {
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this.scrollingRecyclerUpdateTimer = 0;
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this.updateFromRecyclerScroll();
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}, 100);
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// Update that we're scrolling with the recycler
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utils.setRenewingTimeout(this, "scrollingRecyclerNowTimer", null, 200);
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utils.setRenewingTimeout(this, "scrollingRecyclerTimer", null, 1500);
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},
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/** Update cursor position from recycler scroll position */
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updateFromRecyclerScroll() {
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// Ignore if not initialized or moving
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if (!this.ticks.length || this.interacting) return;
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// Get the scroll position
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const scroll = this.recycler?.$el?.scrollTop || 0;
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// Get cursor px position
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const { top1, top2, y1, y2 } = this.getCoords(scroll, "y");
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const topfrac = (scroll - y1) / (y2 - y1);
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const rtop = top1 + (top2 - top1) * (topfrac || 0);
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// Always move static cursor to right position
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this.cursorY = rtop;
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// Move hover cursor to same position unless hovering
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// Regardless, we need this call because the internal mapping might have changed
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if ((<HTMLElement>this.$refs.scroller).matches(":hover")) {
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this.moveHoverCursor(this.hoverCursorY);
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} else {
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this.moveHoverCursor(rtop);
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}
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},
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/** Re-create tick data in the next frame */
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async reflow() {
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if (this.reflowRequest) return;
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this.reflowRequest = true;
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await this.$nextTick();
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this.reflowNow();
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this.reflowRequest = false;
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},
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/** Re-create tick data */
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reflowNow() {
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// Ignore if not initialized
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if (!this.recycler?.$refs.wrapper) return;
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// Refresh height of recycler
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this.recyclerHeight = this.recycler.$refs.wrapper.clientHeight;
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// Recreate ticks data
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this.recreate();
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// Adjust top
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this.adjustNow();
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},
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/** Recreate from scratch */
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recreate() {
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// Clear and override any adjust timer
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this.ticks = [];
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// Ticks
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let prevYear = 9999;
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let prevMonth = 0;
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// Get a new tick
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const getTick = (
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dayId: number,
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isMonth = false,
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text?: string | number
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): ITick => {
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return {
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dayId,
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isMonth,
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text,
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y: 0,
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count: 0,
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topF: 0,
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top: 0,
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s: false,
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};
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};
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// Iterate over rows
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for (const row of this.rows) {
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if (row.type === IRowType.HEAD) {
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// Create tick
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if (this.TagDayIDValueSet.has(row.dayId)) {
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// Blank tick
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this.ticks.push(getTick(row.dayId));
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} else {
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// Make date string
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const dateTaken = utils.dayIdToDate(row.dayId);
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// Create tick
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const dtYear = dateTaken.getUTCFullYear();
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const dtMonth = dateTaken.getUTCMonth();
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const isMonth = dtMonth !== prevMonth || dtYear !== prevYear;
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const text = dtYear === prevYear ? undefined : dtYear;
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this.ticks.push(getTick(row.dayId, isMonth, text));
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prevMonth = dtMonth;
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prevYear = dtYear;
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}
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}
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}
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},
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/**
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* Update tick positions without truncating the list
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* This is much cheaper than reflowing the whole thing
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*/
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async adjust() {
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if (this.adjustRequest) return;
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this.adjustRequest = true;
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await this.$nextTick();
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this.adjustNow();
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this.adjustRequest = false;
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},
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/** Do adjustment synchronously */
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adjustNow() {
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// Refresh height of recycler
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this.recyclerHeight = this.recycler.$refs.wrapper.clientHeight;
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const extraY = this.recyclerBefore?.clientHeight || 0;
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// Start with the first tick. Walk over all rows counting the
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// y position. When you hit a row with the tick, update y and
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// top values and move to the next tick.
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let tickId = 0;
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let y = extraY;
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let count = 0;
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// We only need to recompute top and visible ticks if count
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// of some tick has changed.
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let needRecomputeTop = false;
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// Check if height changed
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if (this.lastAdjustHeight !== this.height) {
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needRecomputeTop = true;
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this.lastAdjustHeight = this.height;
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}
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for (const row of this.rows) {
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// Check if tick is valid
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if (tickId >= this.ticks.length) break;
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// Check if we hit the next tick
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const tick = this.ticks[tickId];
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if (tick.dayId === row.dayId) {
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tick.y = y;
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// Check if count has changed
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needRecomputeTop ||= tick.count !== count;
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tick.count = count;
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// Move to next tick
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count += row.day.count;
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tickId++;
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}
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y += row.size;
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}
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// Compute visible ticks
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if (needRecomputeTop) {
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this.setTicksTop(count);
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this.computeVisibleTicks();
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}
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},
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/** Mark ticks as visible or invisible */
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computeVisibleTicks() {
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// Kind of unrelated here, but refresh rect
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this.scrollerRect = (
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this.$refs.scroller as HTMLElement
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).getBoundingClientRect();
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// Do another pass to figure out which points are visible
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// This is not as bad as it looks, it's actually 12*O(n)
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// because there are only 12 months in a year
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const fontSizePx = parseFloat(
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getComputedStyle(this.$refs.cursorSt as any).fontSize
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);
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const minGap = fontSizePx + (globalThis.windowInnerWidth <= 768 ? 5 : 2);
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let prevShow = -9999;
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for (const [idx, tick] of this.ticks.entries()) {
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// Conservative
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tick.s = false;
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// These aren't for showing
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if (!tick.isMonth) continue;
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// You can't see these anyway, why bother?
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if (tick.top < minGap || tick.top > this.height - minGap) continue;
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// Will overlap with the previous tick. Skip anyway.
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if (tick.top - prevShow < minGap) continue;
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// This is a labelled tick then show it anyway for the sake of best effort
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if (tick.text) {
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prevShow = tick.top;
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tick.s = true;
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continue;
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}
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// Lookahead for next labelled tick
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// If showing this tick would overlap the next one, don't show this one
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let i = idx + 1;
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while (i < this.ticks.length) {
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if (this.ticks[i].text) {
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break;
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}
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i++;
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}
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if (i < this.ticks.length) {
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// A labelled tick was found
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const nextLabelledTick = this.ticks[i];
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if (
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tick.top + minGap > nextLabelledTick.top &&
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nextLabelledTick.top < this.height - minGap
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) {
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// make sure this will be shown
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continue;
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}
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}
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// Show this tick
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tick.s = true;
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prevShow = tick.top;
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}
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},
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setTicksTop(total: number) {
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const isMobile = globalThis.windowInnerWidth <= 768;
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const padding = isMobile ? 20 : 0;
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for (const tick of this.ticks) {
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tick.topF = this.height * (tick.count / total);
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tick.top = utils.roundHalf(tick.topF) + padding;
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}
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},
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/** Change actual position of the hover cursor */
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moveHoverCursor(y: number) {
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this.hoverCursorY = y;
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// Get index of previous tick
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let idx = utils.binarySearch(this.ticks, y, "topF");
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if (idx === 0) {
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// use this tick
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} else if (idx >= 1 && idx <= this.ticks.length) {
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idx = idx - 1;
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} else {
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return;
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}
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// DayId of current hover
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const dayId = this.ticks[idx]?.dayId;
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// Special days
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if (dayId === undefined || this.TagDayIDValueSet.has(dayId)) {
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this.hoverCursorText = "";
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return;
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}
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const date = utils.dayIdToDate(dayId);
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this.hoverCursorText = utils.getShortDateStr(date);
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},
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/** Handle mouse hover */
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mousemove(event: MouseEvent) {
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if (event.buttons) {
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this.mousedown(event);
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}
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this.moveHoverCursor(event.offsetY);
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},
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/** Handle mouse leave */
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mouseleave() {
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this.interactend();
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this.moveHoverCursor(this.cursorY);
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},
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/** Binary search and get coords surrounding position */
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getCoords(y: number, field: "topF" | "y") {
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// Top of first and second ticks
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let top1 = 0,
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top2 = 0,
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y1 = 0,
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y2 = 0;
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// Get index of previous tick
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let idx = utils.binarySearch(this.ticks, y, field);
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if (idx <= 0) {
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top1 = 0;
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top2 = this.ticks[0].topF;
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y1 = 0;
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y2 = this.ticks[0].y;
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} else if (idx >= this.ticks.length) {
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const t = this.ticks[this.ticks.length - 1];
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top1 = t.topF;
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top2 = this.height;
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y1 = t.y;
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y2 = this.recyclerHeight;
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} else {
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const t1 = this.ticks[idx - 1];
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const t2 = this.ticks[idx];
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top1 = t1.topF;
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top2 = t2.topF;
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y1 = t1.y;
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y2 = t2.y;
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}
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return { top1, top2, y1, y2 };
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},
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/** Move to given scroller Y */
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moveto(y: number, snap: boolean) {
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// Move cursor immediately to prevent jank
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this.cursorY = y;
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this.hoverCursorY = y;
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const { top1, top2, y1, y2 } = this.getCoords(y, "topF");
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const yfrac = (y - top1) / (top2 - top1);
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const ry = y1 + (y2 - y1) * (yfrac || 0);
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const targetY = snap ? y1 + SNAP_OFFSET : ry;
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if (this.lastRequestedRecyclerY !== targetY) {
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this.lastRequestedRecyclerY = targetY;
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this.recycler.scrollToPosition(targetY);
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}
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this.handleScroll();
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},
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/** Handle mouse click */
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mousedown(event: MouseEvent) {
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this.interactstart(); // end called on mouseup
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this.moveto(event.offsetY, false);
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},
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/** Handle touch */
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touchmove(event: any) {
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let y = event.targetTouches[0].pageY - this.scrollerRect.top;
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y = Math.max(0, y - 20); // middle of touch finger
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this.moveto(y, true);
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},
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interactstart() {
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this.interacting = true;
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},
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interactend() {
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this.interacting = false;
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this.recyclerScrolled(null); // make sure final position is correct
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},
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/** Update scroller is being used to scroll recycler */
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handleScroll() {
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utils.setRenewingTimeout(this, "scrollingNowTimer", null, 200);
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utils.setRenewingTimeout(this, "scrollingTimer", null, 1500);
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},
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},
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});
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</script>
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<style lang="scss" scoped>
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@mixin phone {
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@media (max-width: 768px) {
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@content;
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}
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}
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.scroller {
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contain: layout style;
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overflow-y: clip;
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position: absolute;
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height: 100%;
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width: 36px;
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top: 0;
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right: 0;
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cursor: ns-resize;
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opacity: 0;
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transition: opacity 0.2s ease-in-out;
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// Show on hover or scroll of main window
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&:hover,
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&.scrolling-recycler {
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opacity: 1;
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}
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> .tick {
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pointer-events: none;
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position: absolute;
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font-size: 0.75em;
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line-height: 0.75em;
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font-weight: 600;
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opacity: 0.95;
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right: 9px;
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top: 0;
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transition: transform 0.2s linear;
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z-index: 1;
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&.dash {
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height: 4px;
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width: 4px;
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|
border-radius: 50%;
|
|
background-color: var(--color-main-text);
|
|
opacity: 0.15;
|
|
display: block;
|
|
@include phone {
|
|
display: none;
|
|
}
|
|
}
|
|
|
|
@include phone {
|
|
background-color: var(--color-main-background);
|
|
padding: 4px;
|
|
border-radius: 4px;
|
|
}
|
|
}
|
|
|
|
> .cursor {
|
|
position: absolute;
|
|
pointer-events: none;
|
|
right: 0;
|
|
background-color: var(--color-primary);
|
|
min-width: 100%;
|
|
min-height: 1.5px;
|
|
will-change: transform;
|
|
|
|
&.st {
|
|
font-size: 0.75em;
|
|
opacity: 0;
|
|
}
|
|
|
|
&.hv {
|
|
background-color: var(--color-main-background);
|
|
padding: 2px 5px;
|
|
border-top: 2px solid var(--color-primary);
|
|
border-radius: 2px;
|
|
width: auto;
|
|
white-space: nowrap;
|
|
z-index: 100;
|
|
font-size: 0.95em;
|
|
font-weight: 600;
|
|
|
|
> .icon {
|
|
display: none;
|
|
transform: translate(-16px, 6px);
|
|
}
|
|
}
|
|
}
|
|
&.scrolling-recycler-now:not(.scrolling-now) > .cursor {
|
|
transition: transform 0.1s linear;
|
|
}
|
|
&:hover > .cursor {
|
|
transition: none !important;
|
|
&.st {
|
|
opacity: 1;
|
|
}
|
|
}
|
|
|
|
// Hide ticks on mobile unless hovering
|
|
@include phone {
|
|
// Shift pointer events to hover cursor
|
|
pointer-events: none;
|
|
.cursor.hv {
|
|
pointer-events: all;
|
|
}
|
|
|
|
> .tick {
|
|
right: 40px;
|
|
}
|
|
&:not(.scrolling) {
|
|
> .tick {
|
|
display: none;
|
|
}
|
|
}
|
|
|
|
.cursor.hv {
|
|
left: 5px;
|
|
border: none;
|
|
box-shadow: 0 0 5px -3px #000;
|
|
height: 40px;
|
|
width: 70px;
|
|
border-radius: 20px;
|
|
> .text {
|
|
display: none;
|
|
}
|
|
> .icon {
|
|
display: block;
|
|
}
|
|
}
|
|
|
|
.cursor.st {
|
|
display: none;
|
|
}
|
|
}
|
|
}
|
|
</style>
|